Latch.



1%.]. BEAUCHEMIN 8. A. 1. LAROCHE.

LATCH.

APPLICATION FILED AUG.30, 1916.. mwmmm Patented July 23,1918.

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specification of Letters Patent.

Patented duly 233i, ltlild.

Application filed August 30, 1916. Serial No. 11'2',5'76.

To all whom it may concern:

Be it known that we, Anrnnn J. BEAU- OHEMIN and ARTHUR J. LAROOIIE, the former a citizen of the United States, and the latter a subject of the King of England, each a resident of Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Latch, of which the following is a specification.

()ur invention relates more'especially to that class of latches that are employed for automatic action in securing a door or like part, and an object of our invention, among others, is to provide a latch of simple construction and that may be produced at a minimum expense; and one that shall be particularly eflective in its operation.

One form of latch embodying our invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which- Figure 1 is a plan view of a latch embodying our invention with the cover plate removed.

Fig. 2 is a View in section through the same on plane denoted by dotted line 22 of Fig. 1, but with the cover plate in place.

Fig. 3 is a view similar to Fig. 1 but showing the latch in its rearward position.

Figs. 1 and 5 are detail perspective views of the latch plate and case plate.

In the accompanying drawings the numeral 6 indicates a latch plate that is constructed of sheet metal of the proper form and that has a face plate 7 secured thereto and projecting at an angle therefrom at one edge, this face plate preferably being formed integral with the latch plate. A. case plate is also formed from sheet metal and includes sides 8 and an end 9. This case plate is bent into U-shaped form and is provided with studslO on one edge and studs 11 at its ends, the former mentioned studs extending into openings or holes in the latch plate and the studs last mentioned projecting into holes in the face plate within which they are secured in any desired man her as by brazing, riveting or otherwise. A cover plate 12 is also formed from sheet metal and of a size to cover the opening in the interior of the case, which opening is bounded by the latch and face plates and sides and ends of the case plate. This cover plate may be secured in place in any desired manner, in the form herein shown,

for the case plate and cover plate. The latch plate and case plate are readily bent to form and attached one to the other.

A latch 15 is slidably mounted within the latch case, the outer end of the latch ere tending through an opening 16 in the face plate 7 to an extent to engage a keeper in a .manner common to devices of this class. The body of the latch has a slot 17 extending therethrough and an actuating stud 18 extending therefrom and secured thereto in any desired manner. The latch is guided in its sliding movement in the case between guide studs 19 that project within the case from the latch plate 6 and to which theyare secured in any desired manner.

A latch actuator is pivotally mounted in the latch plate and extends through the slot 17 in the latch, this actuator comprisinga pivot end 20 rotatably mounted in an opening in the face plate and within which it is secured in any suitable manner, said actuator also including a guide portion 2]. fitting the slot 17 in the latch, and a hub 22 having a recess 23 to receive a handle or knob 2% by means of whlch the actuator may be rotated. Actuating wings 25 project in opposite directions one from the other from the hub 22 thus forming a ll-shaped ac tuating depression 26 within which the stud 18 rests when the parts are in their normal position. In the preferred form of construction this stud has an enlargement 27 upon which -a roller 28 is mounted, said roller normally resting against the wings 25, and the stud being riveted within the latch at its inner end as shown in Fig. 2 of the draw ings. The upper end of the stud above the roller is grooved to receive an end of an actuating spring 29 that forces the latch normally into engagement with the rollback comprising the wings 25.

It will be noted that the latch mechanism comprises parts few in number, the arrangement of the rollback with the spreading wings and the stud engaging the depression between the wings comprises a structure that is very simple in its arrangen'ient and effective in its operation.

1. A latch comprising a latch casing, guide studs projecting from said casing, a latch member slidably mounted between and guided in its movements by said studs, said latch having a slot therein, an actuator rotatably attached to said casing and having a guide portion located within the slot in the latch member, and Wings projecting in divergent directions one from the other providing a V-shaped recess, a stud projecting from the latch member Within said recess, and means for forcing the stud into engagement with the smaller part of said recess.

2. A latch comprising a latch casing, a latch member slidably mounted within the casing and having a slot therein, a stud having a reduced end secured to the latch. by riveting and a larger portion having a roller mounted thereon and a groove at the end of said roller, a spring pro ect1ng with one end in engagement with said groove, a.

latch actuator comprising a pivoted portion attached within said latch casing, a guide portion engaging the sides of the slot in the latch member, and wings projecting in divergent directions one from the other on said actuator providing a V-shaped slot within which said roller is received.

3. A latchincluding a case, a latch mom bcr slidably mounted within the case and having a lengthwise slot therein, an ac tuating studprojecting from said latch member and an actuator having a reduced portion located within said slot and wings extending in divergent directions and overlying saidlatcli member, said wings having curved outer edges to engage said stud that is received between them.

ARTHURv J. BEAUCHEMIN. ARTHUR J. LAROCHE.

Copiesof this patent may be obtained for five cents each, by, addressing the Commissioner of Patents,

. Washington, D. 0." 

